DS and PSP should be fine.

For Wii, you gotta beware of the Region Lock,
you don't want to get lock into PAL region, their Wii games arrived slower,
sometimes more expensive, and their rating board is kinda screwed up.

Expect problems when games in the like of MadWorld or House of the Dead Overkill arrive in the future,
Their rating board sure went wu-wu-ga-ga over it, and delay the already late launching date.
Poor Australian and New Zealanders.....